中国电机工程学报2017，Vol.37Issue(15)：4422-4429,8.DOI:10.13334/j.0258-8013.pcsee.161092
600MW燃煤机组最优氧量与配风方式的联合优化
Combined Optimization of Optimal Oxygen Content and Second Air Distribution in 600 MW Coal-fired Unit
摘要
Abstract
Oxygen content and second air distribution are important factors which influence the boiler efficiency and NOx emissions of coal-fired units.Aiming at the combustion optimization of a 600MW unit,the model of association rule mining algorithm based on clustering partition was established.The density parameter was introduced and the points of high density region were selected as the initial cluster centre for improving the clustering stability.Meanwhile a CV-SVM oxygen soft measurement model was established to reduce the impact of measure error on oxygen content for the data mining results.Based on the history data mining,the optimal oxygen content and the second air distribution with high efficiency and low NOx emission were determined.The results show that optimal oxygen content is lower than the average oxygen content,auxiliary air dampers and surrounding air dampers present waist type distribution.The NOx emissions at mainly load range are decreased from 220～420 mg/m3 to 220～320 mg/m3,meanwhile the boiler thermal efficiency is higher than 92.7％.关键词
燃煤锅炉/关联规则/支持向量机/最优氧量/配风方式/NOx排放Key words
coal-fired boiler/association rules/support vector machines/optimal oxygen/second air distribution/NOx emission分类
能源科技引用本文复制引用
李建强,赵凯,陈星旭,张莹莹..600MW燃煤机组最优氧量与配风方式的联合优化[J].中国电机工程学报,2017,37(15):4422-4429,8.基金项目
中央高校基本科研业务费专项基金资助(916021007).Support by Fundamental Research Funds for the Central Universities (916021007). （916021007）
